Groton Weather Forecast 15 Days, Weather in Groton Today
Current weather conditions and 15 day weather forecast for Groton, South Dakota, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Groton
| 11 May 2026 Monday 13.7 ° C / 56.7°F  Sunny |
Feels Like : 12.3 ° C / 54.2°F Humidity : % 41 Pressure : 1020 mb Wind Speed : 21.6 kmph / 13.4 miles from SSE  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Groton, SD, USA
Weather Forecast for next 15 Days for Groton including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Groton, South Dakota state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 11 May 2026 Monday | Sunny |
3.6 ° C (38.5°F) |
25.9 ° C (78.6°F) |
14.8 ° C (58.7°F) |
% 42 | 0% | 6.5 | Sunrise:06:06 AM Sunset: 08:51 PM |
Moonrise:03:29 AM Moonset: 02:50 PM Moon Phase ( Waning Crescent ) |
|
| 12 May 2026 Tuesday |  Patchy rain nearby |
11.4 ° C (52.5°F) |
21.7 ° C (71.1°F) |
16.3 ° C (61.4°F) |
% 47 | 80% | 6.3 | Sunrise:06:05 AM Sunset: 08:52 PM |
Moonrise:03:47 AM Moonset: 04:03 PM Moon Phase ( Waning Crescent ) |
|
| 13 May 2026 Wednesday | Sunny |
8 ° C (46.5°F) |
23.3 ° C (73.9°F) |
15.9 ° C (60.6°F) |
% 45 | 0% | 7.2 | Sunrise:06:03 AM Sunset: 08:53 PM |
Moonrise:04:05 AM Moonset: 05:20 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday |  Moderate rain |
14.1 ° C (57.4°F) |
23 ° C (73.3°F) |
18.1 ° C (64.6°F) |
% 56 | 85% | 7.3 | Sunrise:06:02 AM Sunset: 08:54 PM |
Moonrise:04:26 AM Moonset: 06:40 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday | Patchy rain nearby |
11.9 ° C (53.4°F) |
22.5 ° C (72.5°F) |
17.5 ° C (63.4°F) |
% 56 | 62% | 0.1 | Sunrise:06:01 AM Sunset: 08:56 PM |
Moonrise:04:50 AM Moonset: 08:05 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Sunny |
8.5 ° C (47.2°F) |
21.7 ° C (71.1°F) |
14.6 ° C (58.3°F) |
% 52 | 0% | 4 | Sunrise:06:00 AM Sunset: 08:57 PM |
Moonrise:05:22 AM Moonset: 09:32 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday | Patchy rain nearby |
6 ° C (42.8°F) |
18.4 ° C (65.2°F) |
13.3 ° C (56°F) |
% 64 | 87% | 3 | Sunrise:05:59 AM Sunset: 08:58 PM |
Moonrise:06:03 AM Moonset: 10:53 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday |  Partly Cloudy |
7.8 ° C (46.1°F) |
16.4 ° C (61.4°F) |
12.8 ° C (55°F) |
% 65 | 0% | 4 | Sunrise:05:58 AM Sunset: 08:59 PM |
Moonrise:06:58 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday | Partly Cloudy |
10.4 ° C (50.8°F) |
24.5 ° C (76.1°F) |
17.5 ° C (63.5°F) |
% 52 | 0% | 5 | Sunrise:05:57 AM Sunset: 09:00 PM |
Moonrise:08:08 AM Moonset: 12:02 AM Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday | Patchy rain nearby |
15.6 ° C (60°F) |
23.5 ° C (74.3°F) |
19.4 ° C (66.9°F) |
% 75 | 80% | 4 | Sunrise:05:56 AM Sunset: 09:01 PM |
Moonrise:09:27 AM Moonset: 12:55 AM Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday | Patchy rain nearby |
17.4 ° C (63.4°F) |
26.8 ° C (80.3°F) |
21.5 ° C (70.8°F) |
% 82 | 88% | 5 | Sunrise:05:55 AM Sunset: 09:02 PM |
Moonrise:10:48 AM Moonset: 01:34 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday | Patchy rain nearby |
10.6 ° C (51°F) |
15.6 ° C (60°F) |
13.3 ° C (55.9°F) |
% 94 | 86% | 3 | Sunrise:05:54 AM Sunset: 09:03 PM |
Moonrise:12:07 PM Moonset: 02:03 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday | Patchy rain nearby |
8.4 ° C (47.1°F) |
11.1 ° C (51.9°F) |
9.8 ° C (49.7°F) |
% 82 | 88% | 2 | Sunrise:05:53 AM Sunset: 09:05 PM |
Moonrise:01:22 PM Moonset: 02:26 AM Moon Phase ( First Quarter ) |
|
| 24 May 2026 Sunday | Patchy rain nearby |
8.6 ° C (47.5°F) |
12.1 ° C (53.8°F) |
10.7 ° C (51.3°F) |
% 95 | 87% | 3 | Sunrise:05:52 AM Sunset: 09:06 PM |
Moonrise:02:32 PM Moonset: 02:45 AM Moon Phase ( Waxing Gibbous ) |
|
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